SUNDAY STORM OUTLOOK: Messy weather is expected on Sunday in the Chicago area and much of the Midwest. A strong low pressure system will move out of Missouri Sunday morning. The low-pressure track is still uncertain, but it’s likely to be a heavy snow shed from this system.

TIMING: Rain will spread to northern Illinois and northwestern Indiana sunday morning. Rain is coming to snow from west to east sometime in the afternoon or evening on Sunday. How early the transition takes place determines how much snow we see. Could be very small or heavy snow.

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SUNDAYS: Rain will change to snow from west to city in the afternoon. When this transition occurs, it is uncertain and can not happen until Sunday evening or evening in certain areas. Temps in the 30’s.

Sundays: The rain shower will change to snow for all areas where it has not yet been completed . Accumulating snow is likely for most areas during this time frame. How much? Due to transition time. Temps that fall into the 20th century.

Monday morning: Temps in the 20th century. Cozy morning commuter with some snow still falling and narrow spots on snowy roads during the overnight hours.

VERY SNOW ?: On the map below the area shaded in dark blue, you could see totals greater than 4 “+. If the heavy snow band changes south, parts of northern Illinois can see so much as well.

The snow totals may vary from 1 to 8 inches above the area, depending on the storm’s track.